an alga infested with a Chytridiumindeed, matters can hardly be otherwise.
Gomontia is a shell-boring alga, A.
one in which the alga and fungus are equally distributed.
granatina the primary alga is Pleurococcus, the secondary, Gleococapsa.
The genus Dictyonema has gonidia belonging to the bluegreen alga, Scytonema.